Chook Me! - I have a bird egg that i found outside it rolled out of a bush. i found out it is a dove egg.?

I have a bird egg that i found outside it rolled out of a bush. i found out it is a dove egg.?

The question is that it said to keep the egg at 99.5°F. I have only a egg Incubator that is set only on 100°F. IS IT SAFE?